Cryptography Reference
In-Depth Information
60
50
40
30
Q uality Fa ctors
20
10
0
4
6
8
1 0
1 2
1 4
1 6
2 0
Fig. 11.23.
JPEG Quality factors vs. the modulation steps in the case of more than
80% recovery.
50
40
30
PSNR
20
10
0
4
6
8
10
12
14
16
2 0
Fig. 11.24.
PSNRs vs. the modulation steps.
Acknowledgement
The research work related to this chapter was supported by Alexander von
Humboldt Foundation Fellowship(Germany), ID: CHN 1115969 STP and the
National Natural Science Foundation of China under grant 60272074 and the
Spaceflight Innovation Foundation of China under grant [2002]210-6.
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